Portable computer



FIG. 1 is a top, front, and right side perspective view of a portable computer showing my new design;

FIG. 2 is a perspective view thereof wherein the cover is opened;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is an enlarged right side elevational view thereof;

FIG. 8 is an enlarged left side elevational view thereof. 

The ornamental design for a portable computer, as shown and described. 